Malicious PDF — malware analysis report

Static analysis result for SHA-256 107af475e3b9354e…

MALICIOUS

PDF

46.0 KB Created: 2021-05-16 14:36:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6cd3ab11d10b47fe739b7dbce10d26f1 SHA-1: 2337f63ccbf3aa151de470fe4493a533a25d1bd6 SHA-256: 107af475e3b9354e47dddf2e5a5363b00c5e06fa289f4798576379d2e22052aa
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF document contains a fake CAPTCHA lure, designed to trick users into clicking a link. The primary external URI points to a download for 'coin-master-apk-game-hack', suggesting a social engineering tactic to deliver potentially unwanted or malicious software. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/coin-master-apk-game-hack PDF link annotation
    • http://geopaper.ge/images/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • http://geopaper.ge/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/roblox-comroblox_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://geopaper.ge/images/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://geopaper.ge/images/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://geopaper.ge/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://geopaper.ge/images/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://geopaper.ge/images/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • http://geopaper.ge/images/roblox-font-free_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/earn-rbx_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a64.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A64 26268 bytes
SHA-256: ceb9ae487d452b190aa6ee00db185d8dd1c72398755b92e7d10a7c4548d603b6
font_01_sfnt_off0000873c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x873C 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off00009240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9240 17892 bytes
SHA-256: 60a225a48b1b678f90e38b10bd9e6f9d01ffb5102f34dbcee4b716dbf4a04973

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